What is a possible effect of a magnetic reversal on Earth's organisms?
A) Species become extinct as they lose their navigational ability.
B) Organisms are subjected to greater amounts of cosmic radiation.
C) Organisms are subjected to greater amounts of radioactivity.
D) Organisms will change their habitats with the accompanying climate change.
Answer: B
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Which of the following is not one of Earth’s layers?
Elevated land with a relatively flat top is a
A. mountain B. cirque D. inselberg
What type of rocks can usually be found in coastal beach environments?
a. Arkose and conglomerate b. Well-sorted, medium grained sandstone with ripple marks c. Sand with mud cracks d. Till e. Both a and b
The cloud droplets in a cloud are formed by water vapor molecules and:
A) ions. B) molecules of air. C) other water vapor molecules. D) condensation nuclei. E) protons.